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Viewing changes to kernel/trace/trace_stat.h

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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kernel/trace/trace_stat.h
 
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#ifndef __TRACE_STAT_H
 
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#define __TRACE_STAT_H
 
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#include <linux/seq_file.h>
 
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/*
 
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 * If you want to provide a stat file (one-shot statistics), fill
 
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 * an iterator with stat_start/stat_next and a stat_show callbacks.
 
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 * The others callbacks are optional.
 
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 */
 
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struct tracer_stat {
 
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        /* The name of your stat file */
 
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        const char              *name;
 
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        /* Iteration over statistic entries */
 
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        void                    *(*stat_start)(struct tracer_stat *trace);
 
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        void                    *(*stat_next)(void *prev, int idx);
 
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        /* Compare two entries for stats sorting */
 
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        int                     (*stat_cmp)(void *p1, void *p2);
 
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        /* Print a stat entry */
 
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        int                     (*stat_show)(struct seq_file *s, void *p);
 
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        /* Release an entry */
 
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        void                    (*stat_release)(void *stat);
 
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        /* Print the headers of your stat entries */
 
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        int                     (*stat_headers)(struct seq_file *s);
 
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};
 
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/*
 
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 * Destroy or create a stat file
 
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 */
 
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extern int register_stat_tracer(struct tracer_stat *trace);
 
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extern void unregister_stat_tracer(struct tracer_stat *trace);
 
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#endif /* __TRACE_STAT_H */